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Burster 8655 Operation Manual

Torque sensor
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© 2023
burster
präzisionsmesstechnik gmbh & co kg
All rights reserved
Valid from:
June 14, 2023
OPERATION MANUAL
Torque sensor
Model 8655
Manufacturer:
burster
präzisionsmesstechnik gmbh & co kg
Talstrasse 1 - 5
76593 Gernsbach
Germany
Tel.: +49 7224 645-0
Fax: +49 7224 645-88
Email: info@burster.de
www.burster.com
Postfach 1432
76593 Gernsbach
Germany
4403-BA8655EN-5699-061529

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Summary of Contents for Burster 8655

  • Page 1 OPERATION MANUAL Torque sensor Model 8655 Manufacturer: © 2023 burster burster präzisionsmesstechnik gmbh & co kg präzisionsmesstechnik gmbh & co kg All rights reserved Talstrasse 1 - 5 Postfach 1432 76593 Gernsbach 76593 Gernsbach Germany Germany Valid from: June 14, 2023 Tel.: +49 7224 645-0...
  • Page 2 “product”) are the result of targeted development and meticulous research. From the date of delivery, burster provides a warranty for the proper condition and functioning of these products covering material and production defects for the period specified in the warranty document accompanying the product.
  • Page 3 of 27...

  • Page 4: Table Of Contents

    4.1. Preparing for installation ....................17 4.2. Mechanical installation ..................... 17 4.2.1. Installation with mounting block ................17 8655 torque sensor with analog connection ............... 18 5.1. Electrical connection ......................18 5.1.1. Power supply ......................18 5.1.2. Connector pin-out (standard sensor) ..............18 5.1.3.
  • Page 5 USB version of the 8655 torque sensor ................22 Options ............................ 23 7.1. Angle/speed measurement ....................23 7.1.1. General ......................... 23 7.1.2. Details ........................23 Calibration and adjustment ....................24 8.1. Factory calibration ......................24 8.2. Calibration certificate with accreditation symbol .............. 24 8.3.

  • Page 6: For Your Safety

    Property damage to the equipment or the surroundings will result if the hazard is not avoided. Note: It is important to heed these safety notices in order to ensure you handle the model 8655 torque sensor correctly. IMPORTANT: Follow the information given in the operating manual.

  • Page 7: General Safety Instructions

    1.2. General safety instructions The model 8655 torque sensor is state of the art, and is safe to operate. However, if the 8655 torque sensor is not used or operated as intended, it may present a hazard. DANGER Electric shock hazard!

  • Page 8: Introduction

    The USB version of the 8655 torque sensor transmits all measurement signals via USB. Both the low mass of the model 8655 torque sensor and its high torsional rigidity are an advantage when measuring dynamic torques. However, you need to pay attention to the spring constant and the cut-off frequency of the model 8655 torque sensor with such measurements.

  • Page 9: Ambient Conditions

    • Avoid radiant heat or cooling from one side. • Protect the 8655 torque sensor from moisture. • The 8655 torque sensor is not resistant to chemical agents. Do not use the sensor in a corrosive environment. • Keep the bearings and connectors free of dust, dirt and other foreign matter.

  • Page 10: Contents Of Pack

    Please note the following when sending the model 8655 torque sensor in for repair: • If there is a problem with the model 8655 torque sensor, please attach a note to the body of the device summarizing the fault.

  • Page 11: Modifications And Maintenance

    The warranty shall be deemed void immediately if you open or dismantle the model 8655 torque sensor during the warranty period. The model 8655 torque sensor does not contain any parts that are intended to be serviced by the user. The transmission system in the model 8655 torque sensor is maintenance-free. Only the manufacturer’s own qualified personnel are permitted to open the model 8655 torque sensor.

  • Page 12: Definitions

    Test side, model 8655 torque sensor Drive side The drive side is the opposite side to the test side. The model 8655 torque sensor is also mechanically connected on this side. This side normally has the larger moment of inertia.
  • Page 13 Sign convention for torque measurement If the shaft of the model 8655 torque sensor rotates clockwise (looking at the drive side), channel A leads channel B by 90°. If the shaft of the model 8655 torque sensor rotates counterclockwise (looking at the drive side), channel B leads channel A by 90°.

  • Page 14: Device Design And General Information

    Device design and general information The figures given for the full dimensions, mass and power depend on the version of the 8655 torque sensor. Please refer to the data sheet for specific figures. 3.1. Mechanical design Figure 4: Basic design of the 8655 torque sensor The 8655 torque sensor essentially consists of three elements: •...

  • Page 15: Principle Of Operation

    The electrical resistance of these strain gages changes proportionally to their deformation. The 8655 torque sensor has a total of four strain gages. These are arranged as a Wheatstone bridge circuit and are supplied with a DC voltage by the electronics. The output voltage from the strain gages changes in direct proportion to the measured torque.

  • Page 16: Estimating The Mechanical Resonant Frequency

    3.4.1. Estimating the mechanical resonant frequency The resonant frequency of the entire test setup depends on the spring constant “c” of the model 8655 torque sensor and the two moments of inertia “J1” and “J2”. These two moments of inertia include the respective connected rotating masses.

  • Page 17: Installation

    Installation 4.1. Preparing for installation Mounting surfaces The mounting surfaces for the 8655 torque sensor or for the optional mounting block must be free of lubricants, particles or burrs. 4.2. Mechanical installation 4.2.1. Installation with mounting block NOTICE Avoid excessive torques, bending moments or axial loads.

  • Page 18: Torque Sensor With Analog Connection

    IMPORTANT: Make sure you do not move the mounting block when tightening. 8655 torque sensor with analog connection 5.1. Electrical connection 5.1.1. Power supply The operating voltage is supplied to the standard model of the 8655 torque sensor via the connecting plug. 5.1.2. Connector pin-out (standard sensor) of 27...

  • Page 19: The Connections In Detail

    Here the external voltage is superimposed on the internal voltage source. As a result, for example, you can connect the model 8655 torque sensor directly to a PLC input with positive logic (not for American PLCs). Using the same connection method you can reduce problems with transmission quality with longer cables.
  • Page 20 Longer transmission paths up to approx. 10 m NOTICE Danger of excessive heating. When connected to a voltage source, the 8655 torque sensor overheats. This overheating will permanently damage the 8655 torque sensor. Always use a pull-up resistor in the voltage source connection.

  • Page 21: Running Cables

    • Make sure that the cable cross-section is sufficient. Note: If you use extension cables it is not necessary to recalibrate the model 8655 torque sensor. However, you will need to adjust the entire measuring chain. IMPORTANT: If a burster cable of type 99540-000F-05200XX is ordered with the sensor, a ceramic capacitor is supplied with the cable.

  • Page 22: Measurement Operation

    (see data sheet). 5.2.3. Check function When a voltage U is applied to the test input, the 8655 torque sensor outputs a signal of exactly 10.000 V at the analog output. USB version of the 8655 torque sensor For the USB version or when using the DigiVision PC software, you can configure the sensor and display and record the measured values via the user interface.

  • Page 23: Options

    If the 8655 torque sensor includes the speed/angle option, the speed/angle output supplies a 5 V TTL signal. For the USB version of the 8655 torque sensor, the measurement data for the torque and also for speed and angle is transmitted digitally via USB.

  • Page 24: Calibration And Adjustment

    Calibration and adjustment Model 8655 torque sensors from burster präzisionsmesstechnik gmbh & co kg are already traceably adjusted and tested in the factory. As an option, we offer factory calibration of the model 8655 torque sensor. 8.1. Factory calibration As part of the traceable burster factory calibration, the 8655 torque sensor is checked for calibratability, and is then calibrated and marked with a calibration label, and a calibration certificate is issued.

  • Page 25: Taking Out Of Use

    • Remove the 8655 torque sensor properly. • Protect the 8655 torque sensor from knocks. • Protect the 8655 torque sensor against bending moments. • Support the model 8655 torque sensor. • Do not drop the model 8655 torque sensor under any circumstances. of 27...

  • Page 26: Technical Data

    Technical data Please refer to the enclosed data sheet for the technical specification. The latest version of the data sheet is available at https://tinyurl.com/3cx6jz5s. Figure 13: Technical data QR code 10.1. Electromagnetic compatibility Interference immunity Interference immunity in compliance with EN 61326-2-3:2006 Industrial environment Interference emission Interference emission in compliance with EN 61326-2-3:2006...

  • Page 27: Disposal

    Disposal Battery disposal In Germany, the end user is legally obliged to return all used batteries, and it is illegal to dispose of batteries in the household waste. This law may also affect you as purchaser of the instrument described here. Please dispose of your used batteries properly and in accordance with national statutory regulations.

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